1997 wont blow out the center a/c vents, WHY? - Page 8 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 06-17-2005, 03:43 PM   #71
Senior Member
Posts like a Northstar
Thread Starter
 
Join Date: Dec 2003
Location: Rockwall County Texas
Posts: 589
Thanks: 0
Thanked 0 Times in 0 Posts
james tharp is on a distinguished road
Default Thanks

I ws able to talk to nick * on the phone and we hammered out where it was.
Your the bomb.
james tharp is offline   Reply With Quote
Old 06-17-2005, 04:37 PM   #72
Senior Member
Posts like a Turbo
 
Join Date: Jun 2005
Location: Tucson, AZ
Posts: 302
Thanks: 0
Thanked 0 Times in 0 Posts
nick s is on a distinguished road
Default

Quote:
Originally Posted by randman1
My service manual was unclear as to the exact location of the source but it did have one line labeled "To Accessory". This line connects to the intake manifold right next to where the large vacuum hose for the brake booster connects. The brake booster hose is about 7/8" in diameter, black and goes from the booster on the firewall to the intake manifold. Your description of "That is the big round thing where you put the break fluid in" is nearly correct. brake fluid is inserted in the master cylinder which is bolted to the booster. You have the right idea though.
Randman1 - the chilton manual does not give the any information on which colored vacuum line from the programer to the doors are, do you happen to know which line controls the dash vents?
nick s is offline   Reply With Quote
Old 06-17-2005, 05:50 PM   #73
Senior Member
Posts like a Northstar
Thread Starter
 
Join Date: Dec 2003
Location: Rockwall County Texas
Posts: 589
Thanks: 0
Thanked 0 Times in 0 Posts
james tharp is on a distinguished road
Default Tested

OK here are the test results...

Tank held at 12 no problem
The line coming out f the fire wall held pressure no problem.
My source had great pressure. Somewhere around 15 to 20
The line from the Y to the tank held pressure no problem.

That check valve is some kind of a one way valve I believe, because I checked that as a seperate part all by its self and it held pressure on one end and the other way it passed.
Recap
Checked this side A ---------)------ B and this side
Checked the Fire wall took it off the Y and tested the line going int the fire wall. It
Held pressure.
Checked the line to the tank while on the tank and it held.
Checked the tank by its self it held.

All connections looked good except the top black hose that went from the ) check valve to the source. That one held pressure but could be replaced.

Now Im not sure how to check under the dash what would be next.

Whew
james tharp is offline   Reply With Quote
Old 06-17-2005, 05:55 PM   #74
Senior Member
Posts like a Northstar
Thread Starter
 
Join Date: Dec 2003
Location: Rockwall County Texas
Posts: 589
Thanks: 0
Thanked 0 Times in 0 Posts
james tharp is on a distinguished road
Default Hmm

Pondering going North. Like Alaska. No need for A/C.
james tharp is offline   Reply With Quote
Old 06-17-2005, 06:45 PM   #75
Senior Member
Posts like a Turbo
 
Join Date: Jun 2005
Location: Tucson, AZ
Posts: 302
Thanks: 0
Thanked 0 Times in 0 Posts
nick s is on a distinguished road
Default Re: Tested

Quote:
Originally Posted by james tharp
OK here are the test results...

Tank held at 12 no problem
The line coming out f the fire wall held pressure no problem.
My source had great pressure. Somewhere around 15 to 20
The line from the Y to the tank held pressure no problem.

That check valve is some kind of a one way valve I believe, because I checked that as a seperate part all by its self and it held pressure on one end and the other way it passed.
Recap
Checked this side A ---------)------ B and this side
Checked the Fire wall took it off the Y and tested the line going int the fire wall. It
Held pressure.
Checked the line to the tank while on the tank and it held.
Checked the tank by its self it held.

All connections looked good except the top black hose that went from the ) check valve to the source. That one held pressure but could be replaced.

Now Im not sure how to check under the dash what would be next.

Whew
James, that is the reason why I asked randman1 the question I did about which color is the line to the door, you may need to check that line next.....
nick s is offline   Reply With Quote
Old 06-17-2005, 07:06 PM   #76
Senior Member
Posts like a Northstar
Thread Starter
 
Join Date: Dec 2003
Location: Rockwall County Texas
Posts: 589
Thanks: 0
Thanked 0 Times in 0 Posts
james tharp is on a distinguished road
Default lines

Nick
Are you able to just pull those lines and check them or should I wait and make sure I know what I'm doing first. Seems like I might have to wait Id hate to screw something up.
james tharp is offline   Reply With Quote
Old 06-17-2005, 07:46 PM   #77
Senior Member
True Car Nut
 
Join Date: Feb 2004
Location: Western MA
Posts: 2,708
Thanks: 0
Thanked 1 Time in 1 Post
randman1 is on a distinguished road
Default

Your testing shows that you have no vacuum leaks under the hood. I do have one question though cause I'm not too familiar with the vacuum gauge you're using. Once you disconnect one of the lines at the Y connector, you will lose vacuum pressure in the whole system. Does your gauge have an input and output so you can start the vehicle and "recharge" the system? Did you also check the gauge while adjusting the Mode button to select different airflow?
randman1 is offline   Reply With Quote
Old 06-17-2005, 08:31 PM   #78
Senior Member
Posts like a Northstar
Thread Starter
 
Join Date: Dec 2003
Location: Rockwall County Texas
Posts: 589
Thanks: 0
Thanked 0 Times in 0 Posts
james tharp is on a distinguished road
Default gague

Hmm.
The gauge does have a vacuum and a pressure nozzle. I can blow air in or I can suck it out.
Start the vehicle and recharge the system. Hmm don't know anyhting about that.

I did check the vaccum on the line coing from the engine with motor on. But know where else, did'nt really know how to or where to do that.

Any suggestions.
james tharp is offline   Reply With Quote
Old 06-17-2005, 10:44 PM   #79
Senior Member
Posts like a Turbo
 
Join Date: Jun 2005
Location: Tucson, AZ
Posts: 302
Thanks: 0
Thanked 0 Times in 0 Posts
nick s is on a distinguished road
Default

Quote:
Originally Posted by randman1
Your testing shows that you have no vacuum leaks under the hood. I do have one question though cause I'm not too familiar with the vacuum gauge you're using. Once you disconnect one of the lines at the Y connector, you will lose vacuum pressure in the whole system. Does your gauge have an input and output so you can start the vehicle and "recharge" the system? Did you also check the gauge while adjusting the Mode button to select different airflow?
That was my next step in the process on mine if it didn't start working when it did. It would be nice to see that when the line is purged by hand to also activate the electronics to see if the doors actually operate when the mode is changed.
nick s is offline   Reply With Quote
Old 06-17-2005, 10:47 PM   #80
Senior Member
Posts like a Turbo
 
Join Date: Jun 2005
Location: Tucson, AZ
Posts: 302
Thanks: 0
Thanked 0 Times in 0 Posts
nick s is on a distinguished road
Default Re: lines

Quote:
Originally Posted by james tharp
Nick
Are you able to just pull those lines and check them or should I wait and make sure I know what I'm doing first. Seems like I might have to wait Id hate to screw something up.
No I couldn't pull mine apart, that is why I asked randman1 if he knew which color line it was, I would cut it to see if there was vacuum and to purge the line to the door to see if it would open or close.
nick s is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
1997 SSEi: No Air Blowing Out of Vents Stevely Pontiac 4 10-01-2010 08:56 PM
A/C takes 10 min. to blow from the dash vents big_news_1 1992-1999 4 07-10-2007 12:40 PM
A/C Problem: Doesn't blow cold air thru dash vents Bigfoot 1992-1999 4 05-21-2007 12:03 AM
No air out center vents still james tharp 1992-1999 3 05-27-2005 04:06 PM
electric Climate AC vents blow out floor while driving mrpontiac80 1992-1999 11 05-09-2005 10:02 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 08:58 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.